Submission #290744

#	Time	Username	Problem	Language	Result	Execution time	Memory
290744		Autoratch	Bigger segments (IZhO19_segments)	C++14	37 / 100	1589 ms	3636 KiB

segments

#include <bits/stdc++.h>
using namespace std;

const int N = 5e5 + 1;

long long n,s[N],dp[N],mn[N];
vector<pair<long long,int> > res;

int main()
{
	ios_base::sync_with_stdio(0); cin.tie(0);

	cin >> n;
	for(int i = 1;i <= n;i++) cin >> s[i],s[i]+=s[i-1];
	for(int i = 1;i <= n;i++)
	{
		//auto it = upper_bound(res.begin(),res.end(),make_pair(s[i],INT_MAX));
		int id = 0;
		for(auto [x,y] : res) if(x<=s[i]) id = max(id,y);
		dp[i] = dp[id]+1;
		mn[i] = s[i]-s[id];
		/*
		if(it==res.begin())
		{
			dp[i] = 1;
			mn[i] = s[i];
		}
		else
		{
			it--;
			int x = it->second;
			dp[i] = dp[x]+1;
			mn[i] = s[i]-s[x];
		}
		*/
		res.push_back({mn[i]+s[i],i});
	}
	cout << dp[n];
}

Compilation message (stderr)

segments.cpp: In function 'int main()':
segments.cpp:19:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   19 |   for(auto [x,y] : res) if(x<=s[i]) id = max(id,y);
      |            ^

• Subtask 1: 13 / 13
• Subtask 2: 14 / 14
• Subtask 3: 10 / 10
• Subtask 4: 0 / 36
• Subtask 5: 0 / 27